The Cathedral of Light is a Capstone Dungeon located in Kyovashad in Diablo 4 (Diablo IV) and is required to reach World Tier 3: Nightmare. Learn more about the Cathedral of Light, including its location, how to complete it, and its rewards!

Attention!	This questline is no longer available as of season 6's update due to the difficulty tier changes.

Cathedral of Light Location

Church in Northern Kyovashad

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The entrance to the Cathedral of Light is located inside of Kyovashad. You can find it inside the church at the northern part of the town, to the left of the altar.

Campaign Must Be Completed and Difficulty Must Be Veteran

Note that you need to have completed Diablo 4's main story and be on World Tier 2 (Veteran difficulty) for the Cathedral of Light to show up on your map.

World Tiers Explained:
How to Change World Tier Difficulty

How to Beat Cathedral of Light

Cathedral of Light Completion Guide
Collect Animus from the Revenant Knights Travel to the High Council Court Defeat the High Council Slay All Enemies in the Reliquary of Erudition Defeat The Curator

Collect Animus from the Revenant Knights

Your first objective after entering the Cathedral of Light is to collect Animus by killing the 5 Revenant Knights scattered around the Hallowed Cloister. Carefully navigate the area, killing minor enemies and Elites along the way, to reach and defeat each Revenant Knight.

Once you've collected enough Animus, head to the Animus Urn near the center of the area and deposit it there to open the doors to the Council Quarters.

Bring Plenty of Lightning Resistance

Each Revenant Knight is an Elite with Summoner, Lightning Enchanted, and Teleporter. We highly recommend bringing plenty of Lightning Resistance, slotting Topaz gems into your Rings and Amulet, and drinking an Elixir of Lightning Resistance to boost your survivability in this section of the Cathedral.

Travel to the High Council Court

After entering the Council Quarters, fight through the area to reach the High Council Court. There are no intermediate objectives in this section of the Cathedral of Light, so it's possible to skip past enemies and rush toward the end if you can survive their attacks.

Defeat the High Council

Once you're inside the High Council Court, the High Council boss fight begins. This encounter pits you against four Elite mobs: the Sacred Physician, Grand Inquisitor, Lord Commander, and Devoted Champion. Strategically take them down one at a time, then head into the Teleporter that appears to proceed to the next section.

Recommended High Council Strategy

Before the fight, refill your Health Potions and consider drinking an Elixir of Man-slaying, as all four Elites are part of the Knights Penitent. Then, during the fight, prioritize taking down the Sacred Physician and Grand Inquisitor first, as the former can revive its allies, and the latter has plenty of annoying ranged attacks.

After dealing with the spellcasters, take down the Devoted Champion to stop him from sticking close to you, then kill the Lord Commander now that he's alone and his slow attacks are easy to avoid.

Slay All Enemies in the Reliquary of Erudition

After taking the Teleporter, you'll find yourself in the Reliquary of Erudition, an area filled with Knights Penitent and Skeleton enemies. Explore the Reliquary and kill all the enemies inside to open up the Curator's Chamber, the last section of the Capstone Dungeon.

Consider Crafting Elixirs of Undead-slaying

We highly recommend crafting and drinking Elixirs of Undead-slaying for this final section of the Cathedral of Light. The damage increase toward undead enemies will greatly speed up clearing out the Reliquary of Erudition and will be extremely useful during the upcoming boss fight with The Curator.

Defeat The Curator

The final boss of the Cathedral of Light is The Curator. This towering undead being uses a giant scythe and necromantic magic, and summons waves of skeletons during the boss fight. Take them down to complete the Capstone Dungeon.

This fight can be extremely tough, so we highly recommend playing safe, partying with other players, and conserving your Health Potions throughout the fight. For more tips and strategies when taking on The Curator, check out our boss fight guide below!

How to Beat the Curator
Capstone Dungeon Boss Guide

Cathedral of Light Completion Rewards

Unlocks World Tier 3: Nightmare

World Tier 3: Nightmare Major Rewards
Sacred and Unique items start dropping Nightmare Sigils and Nightmare Dungeons are unlocked Helltide events will now appear on the map 100% additional EXP and 15% more gold from monsters

Completing the Cathedral of Light unlocks World Tier 3 (Nightmare difficulty). Reaching this difficulty level grants access to new features and late-game activities, such as Sacred and Unique items, Nightmare Dungeons, and Helltides.

Reaching World Tier 3 also marks the beginning of your journey toward Diablo 4's endgame, so check out our guide below for the best activities after beating the campaign!

Endgame Guide:
What to Do After the Campaign

Diablo 4 Related Guides

All Dungeon Locations

List of All Capstone Dungeons

List of Dungeons by Region

Dungeons Related Guides

• Best Dungeons to Farm